* {
  margin: 0;
  padding: 0;
}

button {
  border: 0;
  outline: none;
  background: #3196fa;
  color: #fff;
  padding: 6px 12px;
  font-size: 16px;
  cursor: pointer;
  border-radius: 5px;
}

.main-wrap {
  width: 1200px;
  margin: 30px auto;
  border: 1px solid #ccc;
  box-sizing: border-box;
  padding: 10px;
}

.title {
  text-align: center;
  font-size: 20px;
}

.task_num {
  display: flex;
  margin-bottom: 10px;

  .left {
    padding: 5px 10px;
    border: 1px solid #ccc;
  }

  .right {
    padding: 5px 10px;
    border: 1px solid #ccc;
  }
}

.task_info {
  .item {
    padding: 10px;

    .name {
      font-size: 24px;
      font-weight: bold;
    }

    p {
      font-size: 18px;
    }
  }
}

h3 {
  padding: 25px 0;
}

.read_content {
  display: none;
}

.drag_area {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #999;
  height: 200px;
  border: 1px dashed #ccc;
}

#files {
  margin-bottom: 10px;
  display: none;
}

.upload {
  margin-bottom: 10px;
}